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# form 1
mine @arr = (1,2,3);    # ==> my $arr = \@arr;
...
mine $arr = [1,2,3];    # ==> my \@arr = $arr;

# same according to ours and other datatypes

mine @arr = (1,2,3);   

# and later accidentally 

$arr = [4,5,6];       # ==> \@arr != $arr

mine $arr = [1,2,3];    

...
# even worse

$arr = { a=> 1 }       # ==> @arr must be detroyed? or what?